How is a bulldozer compound machine?

A bulldozer is a compound machine because it combines multiple simple machines to perform its functions. It typically includes a track system (lever and wheel and axle) for mobility, a blade (wedge) for pushing material, and hydraulic components (pistons) for lifting and tilting the blade. By integrating these elements, a bulldozer efficiently moves heavy loads and reshapes terrain. This combination of simple machines enhances its overall effectiveness and versatility in construction and excavation tasks.